Mitsubishi Electric FR-A820-00046 Instruction Manual page 733

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Parameters
Pr.
609
A624
610
A625
1134
A605
1135
A606
Block diagram of dancer control
Main speed
command
PID deviation
Dancer roll
+
etting point
Pr.133
PID set point
Convert to 0 to 100 %
Terminal 4
Fig. 5-274:
Dancer control block diagram
The main speed can be selected in all operation modes, External (analog voltage input, multi-
speed), PU (digital frequency setting) and Communication (RS-485).
FR-A800
Name
PID set point/deviation
input selection
PID measured value input
selection
PID upper limit
manipulated value
PID lower limit
manipulated value
Acceleration/deceleration
of main speed
PID control
1
Kp(1+
+Td S)
Ti S
-
PID feedback
Initial
Setting
Description
value
range
1
Input set point from terminal 1
2
Input set point from terminal 2
2
3
Input set point from terminal 4
4
Input set point via CC-Link communication
5
Input set point by PLC function
1
Input measured value from terminal 1
2
Input measured value from terminal 2
3
3
Input measured value from terminal 4
4
Input measured value via CC-Link communication
5
Input measured value by PLC function
100%
0 to 100%
Set the upper limit of PID action.
100%
0 to 100%
Set the lower limit of PID action.
Ratio
Pr. 128
X14
Pr. 128
Potentiometer
Dancer roll position detection
(A) Application parameters
Target frequency
Acceleration/
deceleration
Limit
+
+
IM
I002706E
5 - 553

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